Middlings-purifier



. W.- L TBTER. Middlin-g's Pul ifien No. 224,969. Patented Feb. .24,1880.

NPETERS. PHOTO-LITHOGRAPMER. WASHINGTON. I10.

g U TED STATES- PATENT ()FFICE.

wIL iAM L, TETER, or PHILADELPHIA, PENNSYLVANIA.

MIDDLINGSQPURIFIER.

SPECIFICATION forming part of Letters Patent No. 224,969,"dated February24, 1880.

Application filed October 16, 1879.

I To. all whom it may concern Belt known thatl, WILLIAM L. TETER, ofPhiladelphia, county of Philadelphia, an (1 State of Fennsylvania, haveinvented an Improve- 111611151 111 Middlings-Purifiers, of which thefollowing is a specification.

My invention relates to that class of puri tiers known as therotary-boltpurifiers, and

it consists of a rotating bolt f peculiar construction,into whichmiddliugs are fed and acted on by an, as hereinafter set forth; and,

I further, in a construction of the purifier-box I supported upon thewooden ribs.

whereby airis admitted and the quantity gov- A is the reel or bolt, andis constructed in l the usual manner, with the exception that thebolting-cloth does not lie upon the wooden ribs, but instead rests uponiron ribs a, which are By this means the middlings are not carried up,as is done in most machines of this nature, but always remain at thebottom during the rota tion of the reel.

The iron ribs a are shown in section in Fig. 5, They rest upon sectionsof tube 1), and are held there by countersunk bolts 0. Both ends of therib is are secured to circular heads.

The sectional iron rib was patented by me in 1879, and bears date ofJuly 8. This form of rib is an improvement upon that, and is especiallyadapted for this particular use.

The reelA rotates in bearings O O. The axis of the reel is supplied withtwo drop-ha1n-. mcrs, d d, the purpose of which is to keep the reel fromclogging.

At one end of the reel is the feed-hopper B,

from which themiddlings are fed to the feed ing-screw upon the shaft ofthe reel A, which screw causes the middlings to fall inside the reel.lnclosing the reel is a box, D, which is dividedby a partition, V. Atthe end of the reel farthest from the feed-hopper B is a dustflue, D.The lower sides, J, of the box areinclined inward, meeting in aconveyor, U. Im-

mediately under this-conveyer is another, W. V

The trough of the conveyor U is furnished with openings at regularintervals, and which are closed at will by paddles c c. The part of thebox D next to the blast-box is fitted with j the air-tube L, which hasinclined sides Z l l l and an oblique head, 6, forming a clear )assageL. O )enin into this tube L is a.

i 1 l i 6 valve, T, in the partition V.

In the compartment K is a vane, M, which has afulcrum or axis at in, theobject of which is to throw the air up against the reel or bolt. It isinclined at any angle from the outside.

At the front end of the machine are the fan N and air-box 0; Openingfrom this air-box O is a valved passage, P, which admits air to theinterior of the reel A, a second valved passage, lt, which admits airunder the front part of the reel, and a third valued passage, S,admitting'air into the air-tube L.

Around the reel-head is a division-wall, 7a, which prevents air frompassage It from entering the reel, or vice versa.

The valved passage S maybe dispensed with, since the valve T will besufficient to regulate the supply of air to the rear part of the reel.All of the valves are operated from the outside.

The two conveyers feed in opposite directions, being geared together bywheels Y Y. Upon the axis of the reel A are two wheels, F

and E. A band passes over the wheel F and wheel H on driving-shaft G.Aband passes over wheel E, and a pulley, Z, on the shaft of the upperconveyor. There is also a band which passes over the pulley I and pulleyn, which drives the fan N. Situated in the upper part of the box D is abrush, Q, which lies upon the rotating reel. There is a free passagefrom the reel to the conveyer U between the sides J J and air-tube L.

In the driving mechanism gearing may be entirely dispensed with, andbands alone used. The reel A is set upon a slight incline.

Operation The fan N being put in motion, the reel A is slowly rotated,and middlings fed therein from hopper B. Blast is allowed to passthrough P into the reel, through R to the outside of thefro'nt half ofthe reel, and through S and T to the outside of the rear half of thereel. All of the airis supposed to pass through the cloth of the. reelbefore finding egress by the flue D. As the reel rotates, the Iniddlingsfall upon fresh portions of the cloth, and during this movement the air,beingforced through the cloth of the reel, throws them up, so as todisengage the fluffypait, which is then blown out of the reel into theflue D by the blast from P. The blast in part K is thrown up against thereel by vane M. During-the above action the purified middlin gs passthrough the boltingcloth and fall to the conveyor U, Should themiddlings which pass the cloth at or near the rear of the reel beinsufficiently pure, a paddle, e, at such a juncture is withdrawn,whence all that produced from such a point to the front of the machineis fed or conveyed to the front end and collected, and all from such apoint to the rear of the machine is conveyed to the opening in trough Uand falls to the conveyer W, which conveys it to the rear end of themachine, whereit is collected and rehandled. The brush Qkeeps the reelor bolting-cloth clean.

In no purifier, to my knowledge, has middlings been treated with air inthe mannerdescribed--viz., forcing the air from the outside to theinside of the reel, in combination with a blast of air lengthwisethrough the reel.

In Oochranes purifiers the air is forced into the reel or bolt throughthe shaft, and escapes through the cloth from inside to outside, whichprevents the escape of the fluffy part, which it is the object of thepurifier to do, while with my construction the opposite is effected.

In practice I find that the product is finer, the yield larger, and thepower required to drive the machine less than any purifier now I knownto me.

.shown, the tendency would be to form a narthe middlings into the reelby a conveyer, as

row stream. which is objectionable; and to overcome this I place aperforated inverted-V- shaped piece, 19, at the mouth of the conveyer,which spreads the iniddlings, so as to be ac ted on thoroughly by theair from valve P.

When the dust-flue D is long it becomes necessary to place a'smallsuction-fan, N, in

said flue for the purpose of forcing out the matters which wouldotherwise be deposited therein.

I claim- 1. In a middlings-purifier, the combination of the reel A,hopper B, dust-flue D, fan N, air box or trunk O, partition V, air-tubeL, and valves T and It, substantially as and for the purpose specified.v

2. In a middlings-purifier, the combination of the reel A, hopper B andits feeding-screw, as shown, and perforated plate 1), with a fan,

N, air-box O, and valve P, for the purpose of 65 spreading the middlingsas they are fed into the reel, substantially in the manner and for thepurpose specified.

3. In a middlings-purifier, the combination of reel A, hopper B, fan N,box 0, dust-flue D, partition V and tube L, vane M, and valves P, R, and'1, all constructed within a box, D, substantially as and for thepurpose specified.

4; In a middlingspurifier, the combination of reel A, hopper B, fan Nand box 0, dusttlue D, partition V and tube L, vane M, and valves R andT, all constructed within the box D, substantially as and for thepurpose specified.

In testimony of which invention I hereunto set my hand.

WILLIAM L. 'IETER.

Witnesses:

R. M. HUNTER, R. GAVIN.

